Is There a Bias in Your A1?

Bruce Rogers, MD, is one of the researchers behind the research on using the non-linear HRV-based marker DFA alpha-1 (which can be be measured non-invasively and for free or very cheaply) to assess the aerobic threshold. We discuss this research and its applications in this interview.   

IN THIS EPISODE YOU'LL LEARN ABOUT:

-What is DFA alpha-1, and how can you measure it? 

-The current evidence behind using DFA alpha-1 as a marker for the aerobic threshold (LT1/VT1)

-Testing protocols, and hardware and software requirements for testing

-Limitations and challenges, including devices, artifacts, and training modality

-How to incorporate DFA alpha-1 testing in your training

-Other potential applications of DFA alpha-1, including assessing fatigue and durability

SHOWNOTES:

https://scientifictriathlon.com/tts329/

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LINKS AND RESOURCES:

• Bruce profiles on Twitter and Research Gate
• A New Detection Method Defining the Aerobic Threshold for Endurance Exercise and Training Prescription Based on Fractal Correlation Properties of Heart Rate Variability - Rogers et al. 2021
• An Index of Non-Linear HRV as a Proxy of the Aerobic Threshold Based on Blood Lactate Concentration in Elite Triathletes - Rogers et al. 2022
• Detection of the Anaerobic Threshold in Endurance Sports: Validation of a New Method Using Correlation Properties of Heart Rate Variability - Rogers et al. 2021
• Influence of Artefact Correction and Recording Device Type on the Practical Application of a Non-Linear Heart Rate Variability Biomarker for Aerobic Threshold Determination - Rogers et al. 2021
• Fractal correlation properties of heart rate variability as a biomarker of endurance exercise fatigue in ultramarathon runners - Rogers et al. 2021
• Correlation Properties of Heart Rate Variability during a Marathon Race in Recreational Runners: Potential Biomarker of Complex Regulation during Endurance Exercise - Rogers et al. 2021
• Heart Rate Variability – New perspectives and insights with Marco Altini, PhD | EP#325

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